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 *
 * This file is available and licensed under the following license:
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 *
 *  - Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the distribution.
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 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package graphics2d.bouncingballs;

import javafx.animation.Animation.Status;

import static graphics2d.bouncingballs.Constants.*;

import javafx.animation.Interpolator;
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.event.EventHandler;
import javafx.scene.input.MouseEvent;
import javafx.scene.shape.Circle;
import javafx.util.Duration;

public class Ball extends Circle {

    private static final Duration DURATION = Duration.millis(850);
    private static final double FLOOR = HEIGHT / 2 - HEIGHT_CORRECTION - 10;
    private Timeline timeline;

    public Ball(final int index) {
        initBall(index);
    }

    private void initBall(final int index) {
        setRadius(BALL_RADIUS);
        setCenterX((index + 1) * 2 * BALL_RADIUS + index * SPACE_X);
        setCenterY(INFOPANEL_HEIGHT + BALL_RADIUS);
        setCache(true);
        setFill(BALL_GRADIENT);
        createTimeline();
        setOnMousePressed((MouseEvent me) -> {
            if (timeline.getStatus() != Status.RUNNING) {
                timeline.play();
            } else {
                timeline.pause();
            }
        });

    }


    private void createTimeline() {
        timeline = new Timeline();
        timeline.setCycleCount(Timeline.INDEFINITE);
        timeline.setAutoReverse(true);

        final KeyValue kv = new KeyValue(
                translateYProperty(),
                FLOOR ,
                Interpolator.SPLINE(0.05f, 0, 0.5f, 0));
        final KeyFrame kf = new KeyFrame(DURATION, kv);
        timeline.getKeyFrames().setAll(kf);
    }

    public void reset() {
        timeline.stop();
        setTranslateY(0);
    }
}
